Which of the following motors has series characteristics ?

Related Mcqs:

1. Two 3.3 kΩ resistors are in series and this series combination is in parallel with a 4.7 kΩ resistor. The voltage across one of the 3.3 kΩ resistors is 12 V. The voltage across the 4.7 kΩ resistor is_________?

   A. 24 V B. 12 V C. 0 V D. 6 V...

2. Two 1.2 kΩ resistors are in series and this series combination is in parallel with a 3.3 kΩ resistor. The total resistance is____________?

   A. 138 Ω B. 1,389 Ω C. 5,700 Ω D. 880 Ω...

3. In a series–parallel circuit consisting of R1 and R2 in series and connected in parallel with R3, if R1 opens, then R2‘s voltage will:___________?

   A. increase B. remain the same C. decrease D. cannot tell...

4. A series resonant band-stop filter consists of a 68 Ω resistor, a 110 mH coil, and a 0.02 µF capacitor. The internal resistance, RW, of the coil is 4 Ω. Input voltage is 200 mV. Output voltage is taken across the coil and capacitor in series. What is the output voltage magnitude at f0?

   A. 1.1 mV B. 11.1 mV C. 111 mV D. 200 mV...

5. For which of the following applications D.C. motors are still preferred ?

   A. High efficiency operation B. Reversibility C. Variable speed drive D. High starting torque...

6. Which of the following motors are best for the rolling mills ?

   A. Single phase motors B. Squirrel cage induction motors C. Slip ring induction motors D. D.C. motors...

7. Which of the following motors is used for elevators ?

   A. Induction motor B. Synchronous motor C. Capacitor start single phase motor D. Any of the above...

8. For crane travel which of the following motors is normally used ?

   A. Synchronous motor B. D.C. differentially compound motor C. Ward-Leonard controlled D.C. shunt motor D. AC. slip ring motor...

9. Which of the following motors is preferred for boom hoist of a travelling crane ?

   A. Single phase motor B. Synchronous motor C. A.C. slip ring motor D. Ward-Leonard controlled D.C. shunt motor...

10. Which of the following motors is preferred when smooth and precise speed control over a wide range is desired ?

    A. D.C. motor B. Squirrel cage induction motor C. Wound rotor induction motor D. Synchronous motor...